When I bottle I use mostly 12oz bottles and 4 or 5 bombers. The bombers almost always take longer to carbonate and seem the age at a much slower rate.
I bring this up because I brewed a batch of Coffee Stout and while I have been drinking the 12 oz bottles of this very tasty brew I opened bomber yesterday and WOW - it was green! tasted very young.
I just found this interesting.
Grinders Island Brewery - Pipeline
Bottled! Award winning East India Porter, Oatmeal Stout, Milk Stout, Saison fermenting at 85 degrees as I type.
I'd age the 22oz bottles at least a couple weeks longer than the 12oz.. How long have they been bottled so far?
Primary 1: IPA
Primary 2: Dubbel
I think they are taking longer to carb, it might be the thicker glass, or higher volume. Maybe the temp stays cooler in the bigger bottle. I've had the same problem.
I've noticed bombers taking longer to carb, but never noticed that they age slower.